Vapor-burner.



Patented May 2|.A |90! zusmvuesheef n.

s. 'E ,FREEM'M vAPon BURNER.

(Appximmn ma-pr. 1e, woo.)

(No Model.)

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S. E. FREEMAN.

Patented May 2|, I90I.

vAPon Burman'.

(lpplintion lgd Apr. 16, 1900.)

2 Sheets-snoei 2.

(llo Modal.)

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:UNITED STATES PATENT FFICE.

STUART E. FREEMAN, OF ST. LOUIS, MISSOURI.

VAPOR-BURNER.

SPECIFICATION forming part of Letters Patent N o. 674,578, dated May 21, 1901.

lpplioation filed April 16, 1900. Serial No. 12,995- (No model.)

To all tlf/tom, it may concern:

Be it known that I, STUART E. FREEMAN, a citizen of the United States, residing at the city of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Vapor-Burners, of Which the following is afull, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to a burner usedV in 'the consumption of hydrocarbon oils to create heat, and has for its object the construction of a burner in which the supply of -vapor admitted to the burner-'is regulated by the demands of the apparatus that is heated in the operation of the burner and in Which a pilot or jet pipe is maintained in constant operation to serve ignition purposes Whenever the heated apparatus becomes depleted of sufficient heat to require the reignition of the burner in toto.

My invention consists in features of novelty hereinafter fully described, and pointed out in the claims.

Figure I is a top or plan View of my improved burner. Fig. II is a front elevation, partly in vertical section, takenon the line II II, Fig. I. Fig. III is a longitudinal section of the controller.

1 designates a frame in which the burner is contained, said frame being preferably of metal.

2 designates a conveyor-pipe through which hydrocarbon oil may be supplied to the burner, said pipe being equipped with a valvel 3. The oil-pipe 2 communicates with a generator-pipe 4, that extends in the form of a rectangle, as seen in Fig. I, Within the frame 1. The generator-pipe 4 communicates with a vapor-conveying pipe 5,'that leads to a position exterior of the frame 1. The vaporconveying pipe 5 has a lateral extension 5a, which enters a controller 6, provided with a valve that is governed by a pressure medium to control the escape of vapor therefrom according to the pressure supplied thereto through a pressure-medium pipe 7, that leads from the apparatus that is heated by the burner. No invention is herein claimed for the controller 6 per se, a briefdescription of which "is hereinafter given.

The vapor generated in the generator-pipe 4 passes through the vapor-conveying pipe 5 and lateral extension 5' to the controller 6 and is discharged therefrom into the mixingtube 8 to be commingled With air.

9 designates a manifold into which the vapor is discharged through the mixing-tu be 8, and 10 is an equalizing-manifold arranged parallel to the manifold 9, but remote therefrom. The manifolds 9 and 10 are connected by a series of burner-tubes ll, provided in their upper edges with slits 12, said tubes having free communication with the interior of the manifolds 9 and 10 to permit the ready passage of vapor from the manifold 9 into said tubes for escape directly therefrom through slits l2 or to the manifold 10, in which the vapor is equalized and from which it returns to the burner-tubes.

13 designates a trough located Within the frame 1 beneath the inner part of the generator-pi pe 4, this trough being preferably filled with asbestos or other non-combustible substance aud adapted to receive a quant-ity of hydrocarbon oil or iniiammable spirit that upon being ignited Will diifuse its heat into contact with the pipe 4 above it and impart heat to said pipe to create initial generation of vapor from the hydrocarbon oil entering said pipe from the supply-pipe 2 on the opening of the valve 3. The trough 13 extends through the Wall of the frame 1 to the exterior thereof for convenience in lighting the inflammable oil or spirit placed therein.

14 designates a pilot or jet pipe extending across the burner-tubes l1 and around the generator-pipe 4 above the trough 13. This pilot or jet pipe is provided with a series of small jet-holes throughout its length, including the portion of it which encircles the generator-pipe 4, (see Fig. IL) and is connected to the generator-pipe 4 at 15. A(See Fig. I.) The vapor escaping from the jet-holes iu the pipe 14 is initially ignited at the end of said pipe extending above the trough 13, and the vapor escaping from the other jet-openings throughout said pipe is ignited by the fiame of each jet communicating to the next succeeding jet throughout the length of the tube. As the vapor is ignited at each jet-opening the vapor escaping from the burner-tubes 1l through the slits 12, arranged in proximity to said jetopenings, becomes ignited from the jets of IOO flame, the bprner being thereby quickly lighted throughout its extent. When the pressure medium flowing through the pipe 7 becomes suicient to actuate the controller 6 and shut off the passage of vaporl therethrough from the pipe 5, the supply of vapor to the manifolds 9 and 10 and the burnertubes 1l is cut off, extinguishing the flames previously burning at said burner-tubes, the jet or pilot pipe 14 receiving its supply direct from the generator-pipe 4 at such time continues to receive the vapor from the generator-pipe, and such vapor remains ignited at the jets of said pipe 14. When the pressure medium entering the controller 6 through the pipe 7 becomes lowered to normal condition, the passageway through the controller is again opened for the flow of vapor therethrough to the manifold 9 and into the burnertubes 11. The vapor then escapes, as before, through the slits in the burner-tubes and is lquickly ignited from the jets of flame burning from the pipe 14. During the`period that the llames are unlighted at the burner-tubes the pilot-pipe 14 is supplied with vapor thatis generated in the generator-pipe 4 at the location of the pilot-pipe where it encircles said generator-pipe and by reason of the jets burning from the pilot-pipe at this position. Furthermore, the heat received by the various parts of the burner, including the inclosing frame 1,in the operation of the burner at full service is retained for a considerable period, and after the flame at the burner is extinguished by the operation of the controller the heat radiates from the surrounding parts of the burner to the generator-pipe and lends assistance in maintaining a heated condition of said generating-pipes to vaporize the oil passing thereto.

The frame 1 is provided with a central aperture 1a in its bottom (see FigII) through which air may enter the frame to pass upwardly through the spaces between the burner-tubes 11 to supply the requisite amount of oxygen for the proper combustion of the vapor. In a burner of this description it is also necessary that the burner-tubes be located i'n as close assemblage as possible consistent with sufficient interior area therein to receive as much vapor as will properly mix with the air supplied. In order to obtain the desired results, I construct the tubes 11 of oval shape in cross-section, which permits of their close assemblage, while at the same time it permits the passage of air between them and provides a maximum of interior area.

The controller 6 contains a pair of diaphragms 6, between which is located a valve 6b, that governs a passage between two chambers inclosed by the diaphragms. The valve 6b is normally held from its seat by a spring 6c. Under normal conditions the vapor enters the controller through the lateral extension 5at of the vapor-conveying pipe 5 and passes through tllefirst chamber past the valve 6b into the second chamber and escapes to the burner through the outlet 6d. An excess of pressure ymedium entering the controller through the pipe 7 presses against the diaphragm at the end of the controller to which the pipe 7 is connected and carries the valve 6b to its seat against the action of the spring 6c, thereby shutting off the passage of vapor through the controller to the outlet until such time as the pressure medium becomes lowered.

I claim as my invention- 1. In a vapor-burner, the combination of a 'generator-pipe in the form of a rectangle, a

controller to which said pipe is connected, burner-tubes surrounded by the generatorpipe, a manifold with which the burner-tubes are connected an'd to which the vapor is delivered from-said controller7 and a pilot or jet pipe connected to said generatorpipe,and extending across the burner-tubes and adapted to convey lighting medium thereto, substantially as described.

2. In a vapor-burner, the combination of burner-tubes, a manifold having communication with said burner-tubes, a generator-pipe in the form of a rectangle surrounding the burner-tubes, a controller connected to said generator pipe, and having an outlet arranged in communication with said manifold; and a pilot or jet pipe arranged in proximity to and extending across said burner-tubes, substantially as described.

3. In a Vapor-burner, the combination of burner-tubes, a pair of manifolds having communication with said burner-tubes, a generator-pipe in the form of a rectangle surrounding the burner-tubes, a controller connected to said generator-pipe, and a pilot or jet pipe arranged in proxi mity to and extending across said burner-tu bes, substantially as described.

4. In a vapor-burner, the combination of burner-tubes, a manifold having communication with said burner-tubes, a comminglingtube, a generator-pipe in the form of a rectangle surrounding the burner-tubes, a controller connected to said generator-pipe arranged to discharge through said commingling-lube into said manifold, a lighter-trough arranged beneath said generator-pipe, and a pilot or jet pipe arranged across said burner- `tubes and said lighter-trough, substantially as described.

5. In a vapor-burner, the combination of a frame, a pair of manifolds located in said frame, burner-tubes connecting said manifolds and having communication therewith, a commingling-tube,a generator-pipe surrounding the burner-tubes,a controller connected to said generator-pipe and arranged to discharge through said commingling-tube into one of said manifolds, and a jet-pipe arranged across l said burner-tubes, substantially as described.

6. A vapor-burner comprising a frame, a conveyer-pipe having a controlling-valve, the generator-pipe in the form of a rectangle with which the con veyer-pipe is connected,the vapor-conveying pipe leading from the genera- IOO IIO

IZO

tor-pipe beyond the frame and having a lateral extension, a controller with which the lateral extension is connected,a com minglingtube into which the controller discharges, the outer manifold with Which the comminglingtube is connected, the inner manifold, the series of burner-tubes surrounded by the generator-pipe and connecting the manifolds, and the jet-pipe extending from the vapor-conveying pipe beneath and over the outer part of the generator-pipe adjacent thereto and across the burner-tubes.

7. A vapor-burner comprising a frame, a conVeyer-pipe having a controlling-valve, the generator-pipe in the form of a rectangle,with which, the conveyer-pipe is connected, the vapor-conveying pipe leading from the generator-pipe beyond 'the frame and having a lat eral extension, a controller with Which the lateral extensonis connected,a comminglingtube into which the controller discharges, the outer manifold With Which the comminglingtube is connected, the inner manifold, the series of burner-tubes oval in cross-section for close assemblage and connecting the manifolds and surrounded by the generator-pipe, and the jet-pipe extending from the Vaporconveying pipe beneath and over the outer part of the generator-pipe adjacent thereto and acrossthe burner-tubes.

8. A vapor-burner comprising a frame, a con Veyer-pipe having a controlling-val ve, the generator-pipe in the form of a rectangle with which the conVeyer-pipe is connected, the Vapor-con veying pipe leading from the generator-pipe beyond the frame and having a lateral extension, a controller with which the lateral extension is connected,a comminglingtube into Which the controller discharges, the outer manifold with which the comminglingtube is connected, the inner manifold, the se ries ofl burner-tubes connecting the manifolds and surrounded by the generator-pipe, the jet-pipe extending from the vapor-conveying pipe beneath and o ver the outer part of the generator-pipe adjacent thereto and across the burner-tubes, and the initial heating-troughvlocated beneath the outer part of the generator-pipe and extending beyond the front of the frame.

STUART E. FREEMAN.

In presence of- E. S. KNIGHT, M. P'. SMITH. 

